| 发明名称 |
Concrete main drainage sewer e pipe has flat sole |
| 摘要 |
<p>A main drainage sewer is assembled from a series of concrete sections placed end to end. Each concrete section is essentially an inverted U-shaped block with esp. a flat sole (2). The block has a circular passage (4) at its centre and a domed top (3).</p> |
| 申请公布号 |
DE20217666(U1) |
申请公布日期 |
2003.02.13 |
| 申请号 |
DE2002217666U |
申请日期 |
2002.11.15 |
| 申请人 |
LAISTNER, HERMANN |
发明人 |
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| 分类号 |
E03F3/04;F16L9/00;F16L9/08;(IPC1-7):F16L9/08;E03B7/00;E02B5/00 |
主分类号 |
E03F3/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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